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(No Modei.)

W. FEHRMANN. APPARATUS FOR VAPORIZING AND SUPERHEATING WATER CONTAINED IN STEAM.

No. 604,524. Patented May 24, 1898.

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I WVOLDEMAR FEIIRMANN, OF MOSOOW, RUSSIA.

APPARATUS FOR VAPORIZING AND SUPERHEATING WATER CONTAINED IN STEAM.

SPECIFICATION forming part of Letters Patent No. 604,524, dated May 24, 1898.

Application filecl May 27, 1897. Serial No. 638,412. (No model.)

T0 at whom it may concern:

Be it known that I, \VOLDEMAR FEHRMANN, a subject of the Emperor of Russia, and a resident of Moscow, in the Empire of Russia, have invented a certain new and useful Improved Apparatus for Vaporizing the Water (Jontained in Steam and Superheatin g the Latter, of which the following is a full, clear, and exact description. I

The present invention consists of an apparatus for vaporizing the water contained in aqueous steam and superheating the latter and of the details hereinafter particularly described.

In order to render the present specification more easily intelligible, reference is had to the accompanying drawings, in which similar letters denote similar parts throughout the several views.

Figure 1 is a longitudinal section through one member of the apparatus, which may consist of more than one member. Fig. 2 is a section on line A B of Fig. 1. Fig. 3 is a longitudinal section through an apparatus consisting of several members on line E F of Fig. 4. Fig. 4 is a transverse section on the line C D of Fig. 3. Fig. 5 is a detail plan of the pipe-connecting piece-for the various members, and Fig. 6 a transverse section showing a modified arrangement of the members.

The apparatus consists of one or more members, and each member consists of two tubes A and 13, arranged concentrically one within the other,the ends of the annular space thus formed between the tubes being closed by mission of the heat to the steam, which latter is a bad conductor of heat, and to distribute the steam well around the space between the two tubes A and B, the latter is provided with a series of corrugated rings arranged around the same insection, as at F and F, the corrugations of one section or ring of corrugations F being displaced with regard to those of the next section F, Fig. 2.

Battle-plates E and E are arranged, respectively, at the inlet and outlet tubes D and D in order to prevent the steam from passing direct from the inlet to the outlet without circulating around the inner tube. The corrugated rings being by nature elastic are suitably attached to the outside of the inner tube and will consequently when the latter is pressed into the outer tube close tightly onto or against the interior surface of the latter. Thus the heat from the interior and exterior tubes will be conducted by the metal plates or corrugated ring to the annular space between the pipes and be transmitted to the steam.

As shown at Figs. 3 to 5, several of these apparatuses may be combined and placed in the flue of a furnace or otherwise heated. In this case seven members A B are employed, the live upper members being of equal length and arranged two above three and the two lower members being somewhat longer in order to allow room for their upwardlyextending inlet and outlet tubes to pass the upper members. The inlet and outlet tubes to each member extend upwardly through the brickwork of the flue and are each provided with a flange at its upper end, said flanges being all connected to the main inlet D by means of a series of branches D at one end and by a similar branch-pipe system to the main outlet D. The advantage of this arrangement is that all the flanges which generally cause most trouble are arranged outside the brickwork and are consequently easily accessible. As shown at these figures, instead of the corrugated rings spirally arranged partitionplates may be arranged, as at G, or a series of slantingly-fixed batfie-plates Il may be employed.

As shown at Fig. 6, two systems or series of members may be arranged one in each side fiue of a boiler-furnace, the pipe connections to and from the same being similarly arranged to those of Fig. 3, with the exception that only four branches are necessary to each connecting-pipe. In this case the steam first passes I from the dome M of the boiler along pipe N to the right-hand series and then from the outlet-pipe of these to the inlet-pipe of the left-hand series and then out at O.

The apparatus may be made of any suitable materialsuch as iron, copper, or the like-and the particular shape of the connecting-pipes for the inlets and outlets of the members may be governed by any particular circumstances.

The apparatus may also be employed as feed-water heater or-as water-heater for hotwater-heating systems.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed,

I declare that whatI claim, and wish to secure by Letters Patent, is

1. The combination of two concentricallyarranged tubes, annular plates to close the ends of the annular space between said tubes, an outlet and inlet steam-pipe at opposite ends of said exterior tube, bathe-plates across the outlet and inlet openings, and a series of plates arranged in the annular space formed between the tubes, so as to cause the steam to take a zigzag course through the same and to impart heat direct to the steam substantially as described.

2. The combination of a series of members, each member consisting of two concen tricallyarranged tubes, having the ends of the annular space formed between the same closed by annular plates, a steam-inlet extending upwardl y from each of the members,and a steamoutlet also extending upwardly at the opposite end of each member, battle-plates within each member, and a series of plates arranged within each member to cause the steam to take a zigzag course through the said member as specified, the said outlet and inlet pipes having flanges and being so arranged that their flanges extend out of the heating-flue which incloses the members, in two groups at each end of the same, a main inlet for the steam having branches to connect with each of the individual inlet-pipes and a main outlet similarly constructed substantially as described.

3. The combination of an exterior and an interior tube concentrically arranged, plates to close the annular space between the two tubes, an inlet-pipe at one end and an outletpipe at the other end of the exterior tube, a slantingly-arranged baffle-plate within the space between the two tubes and across the inlet and outlet, a series of corrugated rings arranged between the outlet andinlet, said rings fitting tightly between and contacting with each of the adjacent walls of the tubes alternately, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WOLDEMAR FEI-IRMANN.

Witnesses:

YAKOB PENNERT, CONSTANTIN PUPOF. 

